UL 697:7ED 2011-03-03

Foreword
Introduction
1 Scope
2 General
3 Glossary
Construction
4 General
5 Mechanical assembly
6 Enclosure
7 Corrosion protection
8 Special safety features
9 Coatings, paints, lacquers, and the like
10 Insulating material
11 Switches
12 Coil insulation
13 Power supply connections
14 Output connections
15 Strain relief
16 Bushings
17 Internal wiring
18 Spacings
19 Separation of circuits
20 Printed wiring boards
Protection against risk of injury to persons
21 Sharp edges and corners
Performance
22 General
23 Leakage current test
24 Leakage current and dielectric voltage-withstand
    test after humidity exposure
25 Open-circuit secondary voltage test
26 Power input test
27 Output test
28 Heating test
29 Output loading test
30 Component breakdown test
31 Printed wiring board abnormal operation test
32 Dielectric voltage-withstand test
33 Power supply strain relief test
34 Output strain relief test
35 Endurance test
36 Overload test on primary switches
37 Overload test on secondary switches
38 Abuse test
38A Direct plug-in blade secureness test
38B Direct plug-in security of input contacts test
38C Rod pressure test on direct plug-in units
38D Resistance to crushing test on direct plug-in units
39 Handles and knobs test
Tests by the manufacturer
40 Details
Ratings
41 General
42 Voltage
Markings
43 General
44 Flexible-film bags
45 Form
Instruction manual
46 General
Appendix
A Standards for components

This revision of ANSI/UL 697 dated July 1, 2021 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS).

These requirements cover toy transformers designed to be used on nominal 120-V branch circuits.